Glass float flowmeter

Overview.

Glass float flowmeter belongs to the variable area flow meter, mainly used in chemical industry, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dyestuff, environmental protection and scientific research and other departments, used to measure the flow of single-phase non-pulsating (liquid or gas) fluid.

Corrosion-resistant flowmeter is mainly used for corrosive liquid, gas medium flow detection, such as strong acids (except hydrofluoric acid), strong alkalis, oxidizers, strong oxidizing acids, organic solvents and other corrosive gas or liquid medium flow detection.

The measuring cone tube of LZB type uses smooth conical glass tube, and LZJ type uses ribbed conical glass tube.

◆Product execution standard: JB/T9255~2015 (industry standard)

◆General standard of flange: GB/T9119-2010 (national standard) Refer to GB/T9119-2000 (national standard)

                       (DN15~50mm for PN1.0MPa)

                       (DN80~100mm for PN0.6MPa)

◆Type approval certificate: 2010F449-33 2010F450-33

Working principle.

The main measuring element of the flowmeter is a vertically mounted small conical glass tube and the float that can move up and down inside the tube. When the fluid flows through the conical glass tube from the bottom up, a pressure difference is generated between the upper and lower float, and the float rises under the action of this differential pressure. When this rising force, the buoyancy force and viscous force on the float and the float's gravity equal, the float is in equilibrium position. Therefore, the fluid flow through the flowmeter and the float rise height, that is, with the flowmeter circulation area there is a certain proportional relationship between the float position height can be used as a measure of flow.

Features.

1. Small pressure loss

2. Reliable performance, easy and intuitive reading

3. Simple structure, easy to install and use

4. Cheap price

气体涡轮流量计气体涡轮流量计是目前应用比较频繁的天然气流量检测仪表，优势是结构简易，安装便捷;尺寸相对较小;准确度高;重复性好;范围度宽可达到15∶1～25∶1，在髙压集气站的前提下，范畴度还可进一步增大;其导出为脉冲频率信号，因而在同可编程流量显示表配用时，容易获得较低的系统测量不确定度。其不足之处是涡轮高速旋转，轴承与轴之间机械摩擦，寿命不很长，因而应注意润化，电磁流量计生产厂家可利用生产厂所提供的润滑手段，定期补充润滑脂。此外，高速流动的气体中假如含有较大的固态颗粒，很容易将涡轮叶片打烂，因而，涡轮流量计前管路上应加装过滤器。